NuTone Central vac won't turn off
My NuTone Central Vac system CV-352 won't turn off until it's unplugged. Pulling hose from outlet and turning on/off switch off don't work. What can I do?
Vacuums - Broan-NuTone - VX475 Bagged Central System Vacuum
Answers & Comments
If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank. If the tank continues to run and still will not turn off, then most likely the relay inside is defective (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected the tank is able to then be turned off with the switch, then there is a short in the low-voltage wires or a hose is plugged into an inlet somewhere. ~ TTURAMBAR
Sounds to me like your tank needs to be serviced and probably needs a relay. contact your local service center.
Also the cv-352 is a very very underpowered tank. if your house is anything over tiny i would get a bigger unit. a bigger one will perform better and have less problems.